High‐precision size recognition and separation in synthetic 1D nanochannels

Wang, P., Cheng, X., Jiang, D., Addicoat, M. ORCID: 0000-0002-5406-7927, Huang, N., Dalapati, S., Heine, T., Huo, F. and Jiang, Q., 2019. High‐precision size recognition and separation in synthetic 1D nanochannels. Angewandte Chemie. ISSN 0044-8249

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Abstract

Covalent organic frameworks (COFs) allow elaborate manufacture of ordered one‐dimensional channels in the crystal. We defined a superlattice of COFs by engineering channels with a persistent triangular shape and discrete pore size. We observed a size‐recognition regime that is different from the characteristic adsorption of COFs, whereby pore windows and walls were cooperative so that triangular apertures sorted molecules of one‐atom difference and notch nanogrooves confined them into single‐file molecular chains. The recognition and confinement were accurately described by sensitive spectroscopy and femtosecond dynamic simulations. The resulting COFs enabled instantaneous separation of mixtures at ambient temperature and pressure. This study offers an approach to merge precise recognition, selective transport, and instant separation in synthetic 1D channels.

Item Type: Journal article
Publication Title: Angewandte Chemie
Creators: Wang, P., Cheng, X., Jiang, D., Addicoat, M., Huang, N., Dalapati, S., Heine, T., Huo, F. and Jiang, Q.
Publisher: Wiley
Date: 28 October 2019
ISSN: 0044-8249
Identifiers:
NumberType
10.1002/ange.201909851DOI
1204097Other
Divisions: Schools > School of Science and Technology
Depositing User: Linda Sullivan
Date Added: 17 Oct 2019 15:23
Last Modified: 11 Nov 2019 09:01
URI: http://irep.ntu.ac.uk/id/eprint/37999

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